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c7d4d259 MS |
1 | /* |
2 | * CP Assist for Cryptographic Functions (CPACF) | |
3 | * | |
4 | * Copyright IBM Corp. 2003, 2016 | |
5 | * Author(s): Thomas Spatzier | |
6 | * Jan Glauber | |
7 | * Harald Freudenberger (freude@de.ibm.com) | |
8 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
9 | */ | |
10 | #ifndef _ASM_S390_CPACF_H | |
11 | #define _ASM_S390_CPACF_H | |
12 | ||
13 | #include <asm/facility.h> | |
14 | ||
15 | /* | |
16 | * Instruction opcodes for the CPACF instructions | |
17 | */ | |
18 | #define CPACF_KMAC 0xb91e /* MSA */ | |
19 | #define CPACF_KM 0xb92e /* MSA */ | |
20 | #define CPACF_KMC 0xb92f /* MSA */ | |
21 | #define CPACF_KIMD 0xb93e /* MSA */ | |
22 | #define CPACF_KLMD 0xb93f /* MSA */ | |
1afd43e0 DH |
23 | #define CPACF_PCKMO 0xb928 /* MSA3 */ |
24 | #define CPACF_KMF 0xb92a /* MSA4 */ | |
25 | #define CPACF_KMO 0xb92b /* MSA4 */ | |
c7d4d259 MS |
26 | #define CPACF_PCC 0xb92c /* MSA4 */ |
27 | #define CPACF_KMCTR 0xb92d /* MSA4 */ | |
28 | #define CPACF_PPNO 0xb93c /* MSA5 */ | |
29 | ||
30 | /* | |
edc63a37 MS |
31 | * Decryption modifier bit |
32 | */ | |
33 | #define CPACF_DECRYPT 0x80 | |
34 | ||
35 | /* | |
36 | * Function codes for the KM (CIPHER MESSAGE) instruction | |
c7d4d259 MS |
37 | */ |
38 | #define CPACF_KM_QUERY 0x00 | |
edc63a37 MS |
39 | #define CPACF_KM_DEA 0x01 |
40 | #define CPACF_KM_TDEA_128 0x02 | |
41 | #define CPACF_KM_TDEA_192 0x03 | |
42 | #define CPACF_KM_AES_128 0x12 | |
43 | #define CPACF_KM_AES_192 0x13 | |
44 | #define CPACF_KM_AES_256 0x14 | |
45 | #define CPACF_KM_XTS_128 0x32 | |
46 | #define CPACF_KM_XTS_256 0x34 | |
c7d4d259 MS |
47 | |
48 | /* | |
49 | * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING) | |
edc63a37 | 50 | * instruction |
c7d4d259 MS |
51 | */ |
52 | #define CPACF_KMC_QUERY 0x00 | |
edc63a37 MS |
53 | #define CPACF_KMC_DEA 0x01 |
54 | #define CPACF_KMC_TDEA_128 0x02 | |
55 | #define CPACF_KMC_TDEA_192 0x03 | |
56 | #define CPACF_KMC_AES_128 0x12 | |
57 | #define CPACF_KMC_AES_192 0x13 | |
58 | #define CPACF_KMC_AES_256 0x14 | |
c7d4d259 MS |
59 | #define CPACF_KMC_PRNG 0x43 |
60 | ||
61 | /* | |
62 | * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER) | |
edc63a37 | 63 | * instruction |
c7d4d259 | 64 | */ |
edc63a37 MS |
65 | #define CPACF_KMCTR_QUERY 0x00 |
66 | #define CPACF_KMCTR_DEA 0x01 | |
67 | #define CPACF_KMCTR_TDEA_128 0x02 | |
68 | #define CPACF_KMCTR_TDEA_192 0x03 | |
69 | #define CPACF_KMCTR_AES_128 0x12 | |
70 | #define CPACF_KMCTR_AES_192 0x13 | |
71 | #define CPACF_KMCTR_AES_256 0x14 | |
c7d4d259 MS |
72 | |
73 | /* | |
74 | * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) | |
edc63a37 | 75 | * instruction |
c7d4d259 MS |
76 | */ |
77 | #define CPACF_KIMD_QUERY 0x00 | |
78 | #define CPACF_KIMD_SHA_1 0x01 | |
79 | #define CPACF_KIMD_SHA_256 0x02 | |
80 | #define CPACF_KIMD_SHA_512 0x03 | |
81 | #define CPACF_KIMD_GHASH 0x41 | |
82 | ||
83 | /* | |
84 | * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST) | |
edc63a37 | 85 | * instruction |
c7d4d259 MS |
86 | */ |
87 | #define CPACF_KLMD_QUERY 0x00 | |
88 | #define CPACF_KLMD_SHA_1 0x01 | |
89 | #define CPACF_KLMD_SHA_256 0x02 | |
90 | #define CPACF_KLMD_SHA_512 0x03 | |
91 | ||
92 | /* | |
93 | * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) | |
edc63a37 | 94 | * instruction |
c7d4d259 MS |
95 | */ |
96 | #define CPACF_KMAC_QUERY 0x00 | |
97 | #define CPACF_KMAC_DEA 0x01 | |
98 | #define CPACF_KMAC_TDEA_128 0x02 | |
99 | #define CPACF_KMAC_TDEA_192 0x03 | |
100 | ||
101 | /* | |
102 | * Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) | |
edc63a37 | 103 | * instruction |
c7d4d259 MS |
104 | */ |
105 | #define CPACF_PPNO_QUERY 0x00 | |
106 | #define CPACF_PPNO_SHA512_DRNG_GEN 0x03 | |
107 | #define CPACF_PPNO_SHA512_DRNG_SEED 0x83 | |
108 | ||
69c0e360 MS |
109 | typedef struct { unsigned char bytes[16]; } cpacf_mask_t; |
110 | ||
c7d4d259 MS |
111 | /** |
112 | * cpacf_query() - check if a specific CPACF function is available | |
113 | * @opcode: the opcode of the crypto instruction | |
114 | * @func: the function code to test for | |
115 | * | |
116 | * Executes the query function for the given crypto instruction @opcode | |
117 | * and checks if @func is available | |
118 | * | |
119 | * Returns 1 if @func is available for @opcode, 0 otherwise | |
120 | */ | |
69c0e360 | 121 | static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask) |
c7d4d259 | 122 | { |
c7d4d259 | 123 | register unsigned long r0 asm("0") = 0; /* query function */ |
69c0e360 | 124 | register unsigned long r1 asm("1") = (unsigned long) mask; |
c7d4d259 MS |
125 | |
126 | asm volatile( | |
1afd43e0 | 127 | " spm 0\n" /* pckmo doesn't change the cc */ |
c7d4d259 MS |
128 | /* Parameter registers are ignored, but may not be 0 */ |
129 | "0: .insn rrf,%[opc] << 16,2,2,2,0\n" | |
130 | " brc 1,0b\n" /* handle partial completion */ | |
69c0e360 | 131 | : "=m" (*mask) |
c7d4d259 MS |
132 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode) |
133 | : "cc"); | |
134 | } | |
135 | ||
69c0e360 | 136 | static inline int __cpacf_check_opcode(unsigned int opcode) |
c7d4d259 | 137 | { |
c7d4d259 MS |
138 | switch (opcode) { |
139 | case CPACF_KMAC: | |
140 | case CPACF_KM: | |
141 | case CPACF_KMC: | |
142 | case CPACF_KIMD: | |
143 | case CPACF_KLMD: | |
69c0e360 | 144 | return test_facility(17); /* check for MSA */ |
1afd43e0 | 145 | case CPACF_PCKMO: |
69c0e360 | 146 | return test_facility(76); /* check for MSA3 */ |
1afd43e0 DH |
147 | case CPACF_KMF: |
148 | case CPACF_KMO: | |
c7d4d259 MS |
149 | case CPACF_PCC: |
150 | case CPACF_KMCTR: | |
69c0e360 | 151 | return test_facility(77); /* check for MSA4 */ |
c7d4d259 | 152 | case CPACF_PPNO: |
69c0e360 | 153 | return test_facility(57); /* check for MSA5 */ |
c7d4d259 MS |
154 | default: |
155 | BUG(); | |
156 | } | |
69c0e360 MS |
157 | } |
158 | ||
159 | static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask) | |
160 | { | |
161 | if (__cpacf_check_opcode(opcode)) { | |
162 | __cpacf_query(opcode, mask); | |
163 | return 1; | |
164 | } | |
165 | memset(mask, 0, sizeof(*mask)); | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func) | |
170 | { | |
171 | return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0; | |
172 | } | |
173 | ||
174 | static inline int cpacf_query_func(unsigned int opcode, unsigned int func) | |
175 | { | |
176 | cpacf_mask_t mask; | |
177 | ||
178 | if (cpacf_query(opcode, &mask)) | |
179 | return cpacf_test_func(&mask, func); | |
180 | return 0; | |
c7d4d259 MS |
181 | } |
182 | ||
183 | /** | |
184 | * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction | |
185 | * @func: the function code passed to KM; see CPACF_KM_xxx defines | |
186 | * @param: address of parameter block; see POP for details on each func | |
187 | * @dest: address of destination memory area | |
188 | * @src: address of source memory area | |
189 | * @src_len: length of src operand in bytes | |
190 | * | |
191 | * Returns 0 for the query func, number of processed bytes for | |
192 | * encryption/decryption funcs | |
193 | */ | |
edc63a37 | 194 | static inline int cpacf_km(unsigned long func, void *param, |
c7d4d259 MS |
195 | u8 *dest, const u8 *src, long src_len) |
196 | { | |
197 | register unsigned long r0 asm("0") = (unsigned long) func; | |
198 | register unsigned long r1 asm("1") = (unsigned long) param; | |
199 | register unsigned long r2 asm("2") = (unsigned long) src; | |
200 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
201 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
202 | ||
203 | asm volatile( | |
204 | "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" | |
205 | " brc 1,0b\n" /* handle partial completion */ | |
206 | : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) | |
207 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM) | |
208 | : "cc", "memory"); | |
209 | ||
210 | return src_len - r3; | |
211 | } | |
212 | ||
213 | /** | |
214 | * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction | |
215 | * @func: the function code passed to KM; see CPACF_KMC_xxx defines | |
216 | * @param: address of parameter block; see POP for details on each func | |
217 | * @dest: address of destination memory area | |
218 | * @src: address of source memory area | |
219 | * @src_len: length of src operand in bytes | |
220 | * | |
221 | * Returns 0 for the query func, number of processed bytes for | |
222 | * encryption/decryption funcs | |
223 | */ | |
edc63a37 | 224 | static inline int cpacf_kmc(unsigned long func, void *param, |
c7d4d259 MS |
225 | u8 *dest, const u8 *src, long src_len) |
226 | { | |
227 | register unsigned long r0 asm("0") = (unsigned long) func; | |
228 | register unsigned long r1 asm("1") = (unsigned long) param; | |
229 | register unsigned long r2 asm("2") = (unsigned long) src; | |
230 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
231 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
232 | ||
233 | asm volatile( | |
234 | "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" | |
235 | " brc 1,0b\n" /* handle partial completion */ | |
236 | : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) | |
237 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC) | |
238 | : "cc", "memory"); | |
239 | ||
240 | return src_len - r3; | |
241 | } | |
242 | ||
243 | /** | |
244 | * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) | |
245 | * instruction | |
246 | * @func: the function code passed to KM; see CPACF_KIMD_xxx defines | |
247 | * @param: address of parameter block; see POP for details on each func | |
248 | * @src: address of source memory area | |
249 | * @src_len: length of src operand in bytes | |
c7d4d259 | 250 | */ |
0177db01 MS |
251 | static inline void cpacf_kimd(unsigned long func, void *param, |
252 | const u8 *src, long src_len) | |
c7d4d259 MS |
253 | { |
254 | register unsigned long r0 asm("0") = (unsigned long) func; | |
255 | register unsigned long r1 asm("1") = (unsigned long) param; | |
256 | register unsigned long r2 asm("2") = (unsigned long) src; | |
257 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
258 | ||
259 | asm volatile( | |
260 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
261 | " brc 1,0b\n" /* handle partial completion */ | |
262 | : [src] "+a" (r2), [len] "+d" (r3) | |
263 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD) | |
264 | : "cc", "memory"); | |
c7d4d259 MS |
265 | } |
266 | ||
267 | /** | |
268 | * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction | |
269 | * @func: the function code passed to KM; see CPACF_KLMD_xxx defines | |
270 | * @param: address of parameter block; see POP for details on each func | |
271 | * @src: address of source memory area | |
272 | * @src_len: length of src operand in bytes | |
c7d4d259 | 273 | */ |
0177db01 MS |
274 | static inline void cpacf_klmd(unsigned long func, void *param, |
275 | const u8 *src, long src_len) | |
c7d4d259 MS |
276 | { |
277 | register unsigned long r0 asm("0") = (unsigned long) func; | |
278 | register unsigned long r1 asm("1") = (unsigned long) param; | |
279 | register unsigned long r2 asm("2") = (unsigned long) src; | |
280 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
281 | ||
282 | asm volatile( | |
283 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
284 | " brc 1,0b\n" /* handle partial completion */ | |
285 | : [src] "+a" (r2), [len] "+d" (r3) | |
286 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD) | |
287 | : "cc", "memory"); | |
c7d4d259 MS |
288 | } |
289 | ||
290 | /** | |
291 | * cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) | |
292 | * instruction | |
293 | * @func: the function code passed to KM; see CPACF_KMAC_xxx defines | |
294 | * @param: address of parameter block; see POP for details on each func | |
295 | * @src: address of source memory area | |
296 | * @src_len: length of src operand in bytes | |
297 | * | |
298 | * Returns 0 for the query func, number of processed bytes for digest funcs | |
299 | */ | |
edc63a37 | 300 | static inline int cpacf_kmac(unsigned long func, void *param, |
c7d4d259 MS |
301 | const u8 *src, long src_len) |
302 | { | |
303 | register unsigned long r0 asm("0") = (unsigned long) func; | |
304 | register unsigned long r1 asm("1") = (unsigned long) param; | |
305 | register unsigned long r2 asm("2") = (unsigned long) src; | |
306 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
307 | ||
308 | asm volatile( | |
309 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
310 | " brc 1,0b\n" /* handle partial completion */ | |
311 | : [src] "+a" (r2), [len] "+d" (r3) | |
312 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC) | |
313 | : "cc", "memory"); | |
314 | ||
315 | return src_len - r3; | |
316 | } | |
317 | ||
318 | /** | |
319 | * cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction | |
320 | * @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines | |
321 | * @param: address of parameter block; see POP for details on each func | |
322 | * @dest: address of destination memory area | |
323 | * @src: address of source memory area | |
324 | * @src_len: length of src operand in bytes | |
325 | * @counter: address of counter value | |
326 | * | |
327 | * Returns 0 for the query func, number of processed bytes for | |
328 | * encryption/decryption funcs | |
329 | */ | |
edc63a37 | 330 | static inline int cpacf_kmctr(unsigned long func, void *param, u8 *dest, |
c7d4d259 MS |
331 | const u8 *src, long src_len, u8 *counter) |
332 | { | |
333 | register unsigned long r0 asm("0") = (unsigned long) func; | |
334 | register unsigned long r1 asm("1") = (unsigned long) param; | |
335 | register unsigned long r2 asm("2") = (unsigned long) src; | |
336 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
337 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
338 | register unsigned long r6 asm("6") = (unsigned long) counter; | |
339 | ||
340 | asm volatile( | |
341 | "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n" | |
342 | " brc 1,0b\n" /* handle partial completion */ | |
343 | : [src] "+a" (r2), [len] "+d" (r3), | |
344 | [dst] "+a" (r4), [ctr] "+a" (r6) | |
345 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR) | |
346 | : "cc", "memory"); | |
347 | ||
348 | return src_len - r3; | |
349 | } | |
350 | ||
351 | /** | |
352 | * cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) | |
353 | * instruction | |
354 | * @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines | |
355 | * @param: address of parameter block; see POP for details on each func | |
356 | * @dest: address of destination memory area | |
357 | * @dest_len: size of destination memory area in bytes | |
358 | * @seed: address of seed data | |
359 | * @seed_len: size of seed data in bytes | |
c7d4d259 | 360 | */ |
0177db01 MS |
361 | static inline void cpacf_ppno(unsigned long func, void *param, |
362 | u8 *dest, long dest_len, | |
363 | const u8 *seed, long seed_len) | |
c7d4d259 MS |
364 | { |
365 | register unsigned long r0 asm("0") = (unsigned long) func; | |
366 | register unsigned long r1 asm("1") = (unsigned long) param; | |
367 | register unsigned long r2 asm("2") = (unsigned long) dest; | |
368 | register unsigned long r3 asm("3") = (unsigned long) dest_len; | |
369 | register unsigned long r4 asm("4") = (unsigned long) seed; | |
370 | register unsigned long r5 asm("5") = (unsigned long) seed_len; | |
371 | ||
372 | asm volatile ( | |
373 | "0: .insn rre,%[opc] << 16,%[dst],%[seed]\n" | |
374 | " brc 1,0b\n" /* handle partial completion */ | |
375 | : [dst] "+a" (r2), [dlen] "+d" (r3) | |
376 | : [fc] "d" (r0), [pba] "a" (r1), | |
377 | [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO) | |
378 | : "cc", "memory"); | |
c7d4d259 MS |
379 | } |
380 | ||
381 | /** | |
382 | * cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) | |
383 | * instruction | |
384 | * @func: the function code passed to PCC; see CPACF_KM_xxx defines | |
385 | * @param: address of parameter block; see POP for details on each func | |
c7d4d259 | 386 | */ |
0177db01 | 387 | static inline void cpacf_pcc(unsigned long func, void *param) |
c7d4d259 MS |
388 | { |
389 | register unsigned long r0 asm("0") = (unsigned long) func; | |
390 | register unsigned long r1 asm("1") = (unsigned long) param; | |
391 | ||
392 | asm volatile( | |
393 | "0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */ | |
394 | " brc 1,0b\n" /* handle partial completion */ | |
395 | : | |
396 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC) | |
397 | : "cc", "memory"); | |
c7d4d259 MS |
398 | } |
399 | ||
400 | #endif /* _ASM_S390_CPACF_H */ |